| OPTICAL TUBE INFO: | |
| Optical Design | Rowe-Ackermann Schmidt Astrograph |
| Aperture | 355.6mm (14″) |
| Focal Length | 790mm (31.1″) |
| Focal Ratio | f/2.2 |
| Central obstruction diameter | 158mm (6.22″)(44% of aperture diameter) |
| Light Gathering Power (Compared to human eye) | 2581X |
| Resolution (Rayleigh) | 0.39 arc seconds |
| Resolution (Dawes) | 0.36 arc seconds |
| Image circle | 60.1mm (2.36″) Ø, 4.4° |
| Useable field | 70mm (2.75″) Ø, 5.1°, only minimal performance loss at edge of FOV |
| Wavelength range | 400 – 900 nm |
| Spot size | < 6.3 μm RMS across FOV |
| Optical coatings | Enhanced aluminum, XLT multi-coatings used throughout |
| Off-axis Illumination | 83% at 30mm (1.18″) off-axis |
| Optical window | 104mm (4.09″) Ø |
| Back focus with included camera adapter | 55mm (2.16″) |
| Back focus from top of threaded collar | 77.5mm (3.05″) |
| Optical Tube | Aluminum |
| Optical Tube Length | 1079.5mm (42.5″) |
| Optical Tube Diameter | 406.4mm (16″) |
| Focuser | New focuser design, minimizes focus shift |
| Finderscope | Not included |
| Optical Tube Weight | 75 lbs (34.02 kg) |
| Other features | Ventilation fan, dual dovetail mounting bars |
| Included items | 48mm (1.89″) camera adapter, fan battery pack |
Celestron, OTA, RASA
36 CM Rowe-Ackermann Schmidt Astrograph (RASA 36)
₹1,601,613.00 excl. 18% GST
- A breakthrough 36 cm aperture, f/2.2 optical system designed for professional applications that require both a wide field of view and resolution, such as space surveillance and other scientific applications
- 4-element lens group utilizes extra-low dispersion (ED) glass for images free of false color, coma, and field curvature, the Rowe-Ackermann Schmidt Astrograph (RASA) 36 cm is also an excellent choice for advanced astroimaging
- 60 mm optimized image circle maintains pinpoint stars to the far corners of the largest available sensors
- Extended spectral range takes advantage of sensor response in the 700-900 nm range, allowing a brighter overall signal to be detected
- Redesigned focusing system minimizes focus shifting or other unwanted motion of the primary mirror, enabling easy and stable focus
Available on backorder
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